It's Not That It Won't Dissolve — It Was Never Hyaluronic Acid
劉達儒醫師 · 7/30/2026
Some people, after receiving filler treatments, begin to experience recurring swelling, tenderness, and even discomfort that persists for months.
When they return to inquire, the answer they receive is usually straightforward:
"It’s just Hyaluronic Acid (HA); a few injections of hyaluronidase will dissolve it."
Consequently, they undergo one hyaluronidase treatment after another.
Some areas may seem to soften, but several spots show no obvious change; the original discomfort never truly disappears.
People begin to wonder if the dosage was insufficient, the placement inaccurate, the capsule too thick, or perhaps if their constitution is particularly sensitive.
Yet, few people stop to re-ask the most fundamental question:
Was everything injected in the first place truly Hyaluronic Acid?
The following content is a reconstruction of multiple clinical scenarios. Timeframes, locations, symptoms, and treatment courses have been significantly altered and do not represent the complete experience of any single patient.
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When treatment keeps failing, the diagnosis is what should be re-checked first
When the patient arrived at the clinic, her appearance did not look severe.
There was only slight asymmetry and swelling on her face; without close inspection, it was difficult to notice anything abnormal.
However, she explained that what truly bothered her was not the appearance, but the recurring pain and tightness in the filler sites.
Medication had temporarily alleviated the symptoms, but they returned once the medication was stopped.
She had also undergone multiple hyaluronidase treatments, some of which were even performed under image guidance.
Some areas did indeed change.
However, there were still several masses visible in the imaging that, no matter how much hyaluronidase was injected, did not show the reaction expected of Hyaluronic Acid.
At this point, the problem may no longer be "whether enough hyaluronidase was injected."
Instead, it is:
Is what we are treating actually Hyaluronic Acid?
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Ultrasound allows fillers to "reveal their true form"
By placing an ultrasound probe over the area, one can see different tissue layers and observe the filler's morphology, depth, boundaries, and changes in the posterior imaging.
The imaging characteristics observed this time were inconsistent with typical Hyaluronic Acid.
Some areas presented as distinct hypoechoic nodules with posterior shadowing, which is more consistent with another type of filler material or the surrounding fibrotic reaction.
In other words:
If it cannot be dissolved, it does not necessarily mean the hyaluronidase is ineffective.
It may be because those substances, from the very beginning, were never within the range of what hyaluronidase can break down.
If the product information obtained initially is incorrect, all subsequent judgments may deviate accordingly.
The physician might proceed in the direction of "Hyaluronic Acid complications."
The patient might, under the same premise, repeatedly receive medication, injections, and even begin to consider more extensive surgery.
But these decisions are all built upon the same unverified name.
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Seeing something does not mean you must cut the face open
When facing deep or fibrotic fillers, patients are sometimes told that a larger incision is required to enter and remove the foreign body or lump.
But before deciding on surgery, one should at least confirm three things:
What the material might be, which layer it is actually located in, and whether it can be treated through a smaller pathway.
In suitable cases, we use ultrasound guidance to enter through a small pinhole, performing minimally invasive reduction or extraction of identifiable and accessible fillers.
How much can actually be removed still depends on the material properties, scope, depth, adhesions, and degree of fibrosis.
Reducing the material does not mean all pain or inflammation will disappear immediately.
But at least this time, we are treating something that truly exists in the imaging and truly needs to be evaluated, rather than continuing to treat based on an incorrect name.
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The most regrettable part of these cases is usually not how much money was spent.
It is that the patient was actually very diligent.
She cooperated with treatments, underwent examinations, and was willing to bear the discomfort and risks brought by one procedure after another.
It is just that the direction may have been wrong from the very beginning.
If the name of a material is wrong, the subsequent diagnosis, treatment, and surgical choices may all go astray.
We often interpret informed consent as a document signed before a procedure.
But what is truly important is whether the patient clearly knows:
What product was injected, what category of material it belongs to, whether it can be degraded, and what treatment options are available if problems arise.
You have the right to decide whether to receive filler treatment.
The prerequisite is that someone tells you honestly beforehand:
What exactly is being injected into your face.
Misnaming something is not just using the wrong word.
Sometimes, it is followed by months of incorrect treatment and risks that could have been avoided.
I would like to ask everyone:
Can you state the exact product name and material composition of the fillers currently in your face?
If you cannot, what exactly was it that you agreed to in the first place?